Ring Alarm Glass Break Sensor

Name: Ring Alarm Glass Break Sensor
Brand: Ring
SKU: B08TG6NCTS
Price: 39.99 USD
Availability: InStock

4.6

2,238

$39.99

Take up to 18 months to pay with as low as 0% APR on some term lengths and no late fees. Prequalify now.

Monitor glass windows and doors for break-in attempts with Ring Alarm Glass Break Sensor. Using AI technology, the sensor detects the sound of glass breaking up to 25 feet. Get mobile alerts when the Glass Break Sensor detects the sound of glass shattering in your home, or set the sensor to automatically sound your Ring Alarm siren when armed in Home or Away mode.

Please note:

Requires Ring Alarm or Ring Alarm Pro, sold separately.

Uses AI technology to detect sounds.

Ring Alarm Glass Break Sensor uses AI technology to accurately detect the sounds of different types of breaking glass and help reduce false alarms. With a detection range of 25 feet, the glass break sensor can cover multiple windows in each room.

A white Ring Alarm Glass Break Sensor is mounted on a light grey wall near a wooden door with a glass window.

An extra layer of security for your glass doors and windows.

Mount the Ring Alarm Glass Break Sensor to your wall or ceiling, or place it on furniture to get alerts when the sound of glass breaking is detected. Or, set the sensor to automatically sound your Ring Alarm siren when triggered. Connect Ring Doorbells or Ring Cameras and set them to start recording when the glass break sensor triggers your Ring Alarm siren.

Subscribe to an eligible Ring Home Plan, sold separately, and add Alarm Professional Monitoring¹, to choose to receive a call from the monitoring center when the Outdoor Contact Sensor is triggered and request emergency assistance if needed.

A person's hand installs a white Ring Alarm Glass Break Sensor on a white wall.

Tech Specs

Supported Devices

Setup Requirement

Requires Ring Alarm or Alarm Pro (sold separately)

Dimensions

Diameter

3.78 inches; 9.6 cm

Height

0.96 inches; 2.45 cm

Weight

5.7 oz (162.5g)

Installation

Operating Temperature

32°F to 120°F (0°C to 49°C)

Power and Connectivity

Power

(2) AA alkaline batteries (included)

Battery Life

Expected battery life is up to 3 years with the included batteries. Battery life is dependent on device settings, usage, environment, and other factors.

Connectivity

Z-Wave (250-foot range to Base Station open air, line of sight) (76 meter range to Base Station open air, line of sight)

General

Warranty

One-year limited warranty

Frequently Asked Questions

Where does Alarm Glass Break Sensor ship to?

Alarm Glass Break Sensor ships to the continental US (excluding American Samoa, Guam, Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands) and Canada.

Still Have Questions?

Amazon Customer Reviews

4.6 out of 5

2,238 global ratings

5 star

79%

4 star

12%

3 star

2 star

1 star

About Amazon ratings

Reviews with images

See all images

This Addition to the Ring Alarm Family is Long Overdue

Well-made Glass Break sensors easy install

No sensor option in the app, only ethernet and pro base router.

Customer reviews

Sort by

Filter by

Amazon Customer

Verified Purchase

Reliable and Easy-to-Use Home Security Upgrade!

Reviewed in the United States on January 6, 2025

The Ring Alarm Glass Break Sensor 2-pack is an excellent addition to my home security system. Installation was a breeze—setting them up with the Ring app took just minutes, and they seamlessly integrated into my existing Ring Alarm setup.

The sensors are incredibly sensitive yet accurate.... Read more

Amazon Customer

Verified Purchase

Handy Practical Device

Reviewed in the United States on February 21, 2025

This works as intended. We bought this because we have a back door that is complete glass. We have it sitting on a window sill. It has been triggered several times by our child dropping toys off her high chair. It just sends us a notification that the glass break sensor went off, it doesn’t make a n... Read more

Amazon Customer

Verified Purchase

Works very well

Reviewed in the United States on February 16, 2025

This product is really nice but extremely sensitive to sound which I guess is good. For example, if I turn on the alarm before I close my curtains, the system may think me closing my curtains is glass breaking. Why I gave those five stars because if something is sensitive as closing a curtain sets i... Read more

Amazon Customer

Verified Purchase

This Addition to the Ring Alarm Family is Long Overdue

Reviewed in the United States on March 17, 2022

I’ve had a Ring alarm system for almost four years and the experience has been great, but my one complaint from the very beginning is they didn’t offer a glass break sensor. As anyone with any security system experience knows, this is an integral part of a complete system. After waiting impatientl...y for years, I was thrilled to find out they finally released one. I received it within 48 hours of ordering it and was eager to set it up and test it out.

For those of you looking for specs, here they are:
Detection Range: 25 feet
Suggested Mounting height: 7 feet off the ground and higher
Size Across: Approximately 3.75 inches
Weight: Approximately 5.7 ounces

Just like all the other Ring alarm sensors, it was packaged nicely and included directions, batteries and mounting screws. The set up was also just like all of their other sensors. The app guided me though the set up and even provided a video. The most difficult part for me was removing the plastic battery tab. It was stuck and I had to remove the sensor from its mounting base to get it to come lose.

The sensor can be set to work in three different modes: Home, Away and it can even be set to work when the system is disarmed. Although it will detect the sound of glass breaking while the system is unarmed, it will NOT notify the central station in this mode. It does however send a notification through the app. Having it detect glass breaking while the system is unarmed requires you to turn off battery saver mode, which can be found under “Mode Settings”. I have no idea how much faster this will deplete the batteries. Further testing will be required to determine that.

For right now I decided to set mine up and just place it on top of a shelf between two windows. I set it on the very top, which was approximately 6 feet 2 inches off the floor. I then turned off battery saver mode and kept the device in view in the app. For sound detection testing purposes, I have the advantage of being a drummer. For testing I used a 15-inch Wuhan china cymbal. For those of you unfamiliar, these sound very much like breaking glass. I placed the cymbal approximately 18 feet from the glass break detector and hit it in such a way as to mimic the volume that I believe a shattering window would make (I know I know, it’s not very scientific). The detector immediately detected the sound and sent a notification through the app to my phone. SUCCESS!! Had the system been in Home or Away mode, it would have notified the central monitoring station.

So clearly I’m very happy with this product and its performance, but I do have some feedback for the Ring team: The batteries that are included are basic alkaline AAs. Every other device I have ever purchased from Ring came with lithium ions, which are known to last much longer. It seems they cheeped out a little when it comes to this sensor. For the price I paid for the glass break detector, I don’t think including lithium ions are too much to ask for. After these run out, I’ll be replacing them with Energizer lithium ions. My second suggestion would be to allow this sensor to be programmed to alert the monitoring station when the system is disarmed. A great deal of home break-ins occur during the day. Having this added layer of protection 24/7 would definitely be a serious bonus for any home owner, especially to the highly vulnerable and those living in crime ridden areas. My third and final suggestion is, it would be very helpful if Ring could somehow provide an official testing method. A certified sound clip or tool would be immensely helpful and would prevent people from resorting to random and sometimes ridiculous testing methods (such as hammering broken glass to death).

For now, I’ve given this product a four-star rating. If I have any issue with it, or if Ring does any improvements to it, I will consider adjusting that rating accordingly.

Lastly, I want to clear up a few misnomers about this product. Another review stated this product needs a “hub” to work. I have absolutely no idea what they are referring to. If you have the Ring alarm base station, then this item will work with no additional item(s) needed. If this reviewer bought this without a Ring alarm base station and thought it would work, then they obviously didn’t read the description. That’s their fault and not the fault of this device or the Ring team.

Another repeat statement I have read a lot is that these are too sensitive and false all the time. This is a glass break detector, and therefore is designed to detect sound. Yes, a very specific wavelength, but with that said, the placement of this should be well thought out. If you place this in a kitchen with a tile floor, there is a higher probability you will receive false alarms every time you clatter silverware, dishes glasses and drop anything metallic or glass on the floor. If you place this in a room with a loud stereo or surround sound system, you’re going to receive false alarms. If you place this in a music room with a drum set, you’re going to get false alarms every time someone crashes on a cymbal. This isn’t specific to the Ring glass break sensor. All glass break sensors are prone to this. Give careful consideration about the placement and the programming modes you want this to arm in. Keep in mind you can program this to only arm when the system is in Away mode. If you have more than one throughout your house, you can also program some to arm in both Home and Away mode and others to only arm when in Away mode. If your home or business in noisy 24/7, this may not be the best addition to your security system.

There seems to be a lot of confusion about when this will trip the alarm and notify the central monitoring station, and when it will only send an alert to your device via the Ring app. I have already covered this, but will restate it. It can be programmed to trip the alarm and notify the central station in Home and Away modes. It can also be programmed when the system if off (not in Home or Away mode) to send a notification to your device through the Ring app. This can be done by turning off the battery saver mode, which can be found under “Mode Settings”. Turning off the battery saver mode will NOT affect how the device performs when the system is in the Home or Away mode.

I hope this review and all the additional information I have put in to it helps others to make an informed decision when it comes to this glass break sensor. As I stated earlier, I’m happy with this item and plan to order several more to add to my security system. Read more

Amazon Customer

Verified Purchase

Peace of Mind and Added Security

Reviewed in the United States on January 6, 2025

After experiencing multiple break-ins with broken windows, these glass break sensors have been a game-changer for our peace of mind. They’re incredibly sensitive and reliable—if glass breaks, the alarm immediately sounds, ensuring quick action. With professional monitoring, we also know that authori... Read more

Back

¹Professional Monitoring is an add-on plan that first requires a compatible Ring Home subscription. Both sold separately. Service available within the U.S. (all 50 states, but not U.S. territories) and in Canada (excluding Quebec). Ring does not own its monitoring center. Smoke and carbon monoxide monitoring is not available for business or commercially zoned addresses. See Ring Alarm licenses at: ring.com/licenses. Additional fees may be required for permits, false alarms, or Alarm Verified Guard Response, depending on your local jurisdiction.

$39.99